The youngster is considered one of the Magpies’ top prospects, but McClaren was eager for him to gain more first-team experience before throwing him in at St. James’ Park.
However, his plan to send him out on loan has been foiled, as Aarons is now set to miss a considerable period of time with injury.
"If Rolando hadn’t got injured we’d have been thinking about him as well," he said.
“These players need gametime. I think the main thing is we’re concentrating on what players we have here and what players we need here.
“We always said we’ll have three months training with [Ivan Toney] and then he’ll go out on loan. That was the plan. The same with Rolando, but he’s not quite there."
Aarons started to break through at Newcastle at the start of the 2014/15 campaign, but injury has halted his progress.
The winger has struggled to stay off the treatment table for a long period of time, and there are concerns starting to form over his poor injury record.
Aarons will be looking to prove that these doubts are unfounded in the future though, as he has shown his class when on the pitch.
The 20-year-old set pulses racing with his performances last season, and he could have a very exciting future, if he is able to avoid any further fitness issues.